package com.ssy.lingxi.product.utils;

import com.ssy.lingxi.product.service.DistributedLockerService;
import org.redisson.api.RLock;
import org.springframework.stereotype.Component;

import javax.annotation.PostConstruct;
import javax.annotation.Resource;
import java.util.concurrent.TimeUnit;

/**
* redis分布式锁帮助类
* @author wrc
* @date 2020/9/9
*/
@Component
public class RedisLockUtil {


    @Resource
    private DistributedLockerService locker;

    private static DistributedLockerService distributedLocker;


    @PostConstruct
    private void init() {
        distributedLocker = locker;
    }

    /**
     * 加锁
     */
    public static RLock lock(String lockKey) {
        return distributedLocker.lock(lockKey);
    }

    /**
     * 释放锁
     */
    public static void unlock(String lockKey) {
        distributedLocker.unlock(lockKey);
    }

    /**
     * 释放锁
     */
    public static void unlock(RLock lock) {
        distributedLocker.unlock(lock);
    }

    /**
     * 带超时的锁
     * @param timeout 超时时间   单位：秒
     */
    public static RLock lock(String lockKey, int timeout) {
        return distributedLocker.lock(lockKey, timeout);
    }

    /**
     * 带超时的锁
     * @param unit 时间单位
     * @param timeout 超时时间
     */
    public static RLock lock(String lockKey, int timeout, TimeUnit unit ) {
        return distributedLocker.lock(lockKey, unit, timeout);
    }

    /**
     * 尝试获取锁
     * @param waitTime 最多等待时间
     * @param leaseTime 上锁后自动释放锁时间
     */
    public static boolean tryLock(String lockKey, int waitTime, int leaseTime) {
        return distributedLocker.tryLock(lockKey, TimeUnit.SECONDS, waitTime, leaseTime);
    }

    /**
     * 尝试获取锁
     * @param unit 时间单位
     * @param waitTime 最多等待时间
     * @param leaseTime 上锁后自动释放锁时间
     */
    public static boolean tryLock(String lockKey, TimeUnit unit, int waitTime, int leaseTime) {
        return distributedLocker.tryLock(lockKey, unit, waitTime, leaseTime);
    }
}
